class_docstr: A type-safe wrapper for a list of quantile forecasts, stored as NumPy
  arrays.
class_docstr_tok: ["A","type-safe","wrapper","for","a","list","of","quantile","forecasts",",","stored","as","NumPy","arrays","."]
code: def __getitem__(self, index: npt.ArrayLike) -> QuantileForecasts:  # type: ignore
      return QuantileForecasts(
          values=self.values[index],
          start_dates=self.start_dates[index],
          item_ids=self.item_ids[index],
          freq=self.freq,
          quantiles=self.quantiles,
      )
  
file_path: gluonts/src/gluonts/nursery/tsbench/src/tsbench/forecasts/quantile.py
imports: from __future__ import annotations
  from dataclasses import dataclass
  from pathlib import Path
  from typing import List
  import numpy
  import numpy.typing
  import pandas
  from gluonts.model.forecast import QuantileForecast
  from gluonts.time_feature import get_seasonality
label_desc: Use image node_id 6 for calling the QuantileForecasts obj's underlying member method code with example usage: obj.__getitem__(index) and returns: QuantileForecasts